Togu Redondo Ball 26 cm Perfect for Posture, Balance, Core, Yoga, Pilates, Barre, Stretching, Physical Therapy and Rehab Useful for a wide range of exercises to build muscles and improve flexibility This exercise ball can also be used for relaxation and massage Inflate the Redondo Ball with the included straw The balls soft, but strong foamed PVC is durable and can bear up to 250 pounds Use it as a support under your back to strengthen your core musculature. Bounce it and catch it to improve coordination and skills